.bss-demo-section{background:#f7f4ef;border-top:1px solid var(--bss-line);border-bottom:1px solid var(--bss-line)}
.bss-demo-section .bss-section-head{margin-bottom:30px}
.bss-demo-frame{position:relative;overflow:hidden;padding:9px;border-radius:20px;background:#171419;box-shadow:0 24px 58px rgba(23,20,25,.14)}
.bss-demo-brand-mask{position:absolute;z-index:2;top:9px;left:9px;right:9px;height:12%;min-height:44px;display:flex;align-items:center;gap:10px;padding:8px 16px;background:linear-gradient(90deg,rgba(75,31,61,.98),rgba(75,31,61,.93));color:#fff;border-radius:13px 13px 0 0;pointer-events:none}
.bss-demo-brand-mask img{width:30px;height:30px;filter:brightness(0) invert(1);opacity:.94}
.bss-demo-brand-mask span{display:flex;flex-direction:column;line-height:1.08}
.bss-demo-brand-mask strong{font-size:14px;letter-spacing:.01em}
.bss-demo-brand-mask small{margin-top:3px;font-size:9px;color:#eadbd4}
.bss-demo-video{display:block;width:100%;aspect-ratio:16/9;border-radius:13px;background:#111;object-fit:cover}
.bss-demo-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:16px}
.bss-demo-steps article{display:grid;grid-template-columns:32px minmax(0,1fr);column-gap:9px;align-content:start;min-height:0;height:auto;padding:13px;border:1px solid var(--bss-line);border-radius:12px;background:rgba(255,255,255,.72)}
.bss-demo-steps article>span{grid-row:1/3;display:grid;place-items:center;width:29px;height:29px;border-radius:8px;background:#8b5366;color:#fff;font-size:9px;font-weight:900}
.bss-demo-steps strong{font-size:12px;line-height:1.25;color:#302b31}
.bss-demo-steps small{display:block;margin-top:2px;color:var(--bss-muted);font-size:10px;line-height:1.35}
.bss-demo-note{margin:10px 2px 0;color:var(--bss-muted);font-size:10px;line-height:1.45}
@media(max-width:900px){.bss-demo-steps{grid-template-columns:1fr 1fr}}
@media(max-width:620px){
  .bss-demo-section .bss-section-head{margin-bottom:20px}
  .bss-demo-frame{padding:5px;border-radius:13px;box-shadow:0 18px 40px rgba(23,20,25,.12)}
  .bss-demo-brand-mask{top:5px;left:5px;right:5px;min-height:36px;padding:6px 10px;border-radius:8px 8px 0 0}.bss-demo-brand-mask img{width:24px;height:24px}.bss-demo-brand-mask strong{font-size:12px}.bss-demo-brand-mask small{font-size:8px}
  .bss-demo-video{border-radius:8px}
  .bss-demo-steps{grid-template-columns:1fr;gap:7px;margin-top:12px}
  .bss-demo-steps article{grid-template-columns:30px minmax(0,1fr);column-gap:9px;padding:10px 11px;border-radius:10px}
  .bss-demo-steps article>span{width:27px;height:27px;border-radius:7px;font-size:8px}
  .bss-demo-steps strong{font-size:11.5px;line-height:1.2}
  .bss-demo-steps small{font-size:9.5px;line-height:1.3;margin-top:2px}
  .bss-demo-note{margin-top:9px;font-size:9px;line-height:1.4}
}